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A239287 as a triangular array

0
00
101
1001
21012
210012
3210123
32100123
432101234
4321001234
54321012345
543210012345
654321012

A239287 as a square array

0011223344556
000112233445
10001122334
1100011223
211000112
22110001
3221100
332211
43322
443
54
5
0011223344556
000112233445
10001122334
1100011223
211000112
22110001
3221100
332211
43322
443
54
5